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6. Deformation of solids

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2 topics · 10 learning objectives

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  1. 6.1 Stress and strain

    1. • understand that deformation is caused by tensile or compressive forces (forces and deformations will be assumed to be in one dimension only)

    2. • understand and use the terms load, extension, compression and limit of proportionality

    3. • recall and use Hooke’s law

    4. • recall and use the formula for the spring constant k = F / x

    5. • define and use the terms stress, strain and the Young modulus

    6. • describe an experiment to determine the Young modulus of a metal in the form of a wire

  2. 6.2 Elastic and plastic behaviour

    1. 6.2.1The terms elastic deformation, plastic deformation and elastic limit

      • understand and use the terms elastic deformation, plastic deformation and elastic limit

    2. 6.2.2The area under the force–extension graph represents the work done

      • understand that the area under the force–extension graph represents the work done

    3. 6.2.3The elastic potential energy of a material deformed within its limit of

      • determine the elastic potential energy of a material deformed within its limit of proportionality from the area under the force–extension graph

    4. 6.2.4EP = 1/2 Fx = 1/2 kx2 for a material deformed within its limit of

      • recall and use EP = 1/2 Fx = 1/2 kx2 for a material deformed within its limit of proportionality